As the Blue Jays’ decision-makers vow to put together a younger and more athletic roster for next season, they’ve used these meaningless — in terms of impact on a playoff race — September games to see what they have with two prospects already in the organization: Teoscar Hernandez and Richard Urena.

Hernandez, 24, has been playing nearly every day in the outfield since his call-up on Sept. 1 and has shown flashes of the potential that made him the desired return from the Astros at this year’s trade deadline in exchange for Francisco Liriano. In particular, his power (five doubles and four home runs in 19 games) and defensive versatility has stood out.

Urena, 21, has handled himself well at shortstop and got off to a hot start at the plate, hitting .316/.381/.474 in his first 10 games. Since then he has one hit and one walk in 22 plate appearances and has struck out 10 times, as pitchers began feeding him a steady diet of breaking balls. The...